Excellent PLC
1️⃣ Overview
The Honeywell 10018/2/U communication module is designed for HC900 / TDC / Experion PKS systems to manage data exchange between controllers, I/O modules, and supervisory systems.
Proper installation ensures:
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Stable system communication
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Accurate data transfer
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Fault-free integration with existing PLC or SCADA networks
2️⃣ Safety and Preparation
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Power down the control system completely before installation.
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Disconnect AC/DC power to the rack.
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Wear ESD protection (wrist strap or mat).
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Confirm the module part number 10018/2/U matches system requirements.
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Verify that the rack slot is free of dust and debris.
⚠️ Note: Installing the module while the system is powered can cause communication errors or hardware damage.
3️⃣ Required Tools
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Honeywell-approved 10018/2/U module
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ESD wrist strap
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Small flathead screwdriver (for latch release)
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Multimeter (optional for power verification)
4️⃣ Step-by-Step Installation
Step 1 — Prepare Rack Slot
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Identify the target slot in the rack.
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Remove any blanking plate.
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Inspect backplane connector for dust, oxidation, or bent pins.
Step 2 — Insert Communication Module
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Align module edge connector with backplane slot.
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Slide in firmly but gently until fully seated.
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Secure latches or clips to prevent movement.
Step 3 — Connect Cables
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Connect network or communication cables to module ports:
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RS-485 / RS-232 / Ethernet depending on system type
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Ensure proper polarity and cable termination.
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Avoid tight bends or strain on the cable.
Step 4 — Power On & Verify Operation
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Restore power to the rack.
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Observe LEDs:
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PWR: solid green
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COM: blinking green indicates active communication
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FAULT/ERR: off (normal operation)
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Verify network connectivity using engineering workstation or SCADA tool.
5️⃣ Troubleshooting Tips
| Symptom | Possible Cause | Action |
|---|---|---|
| COM LED off | Loose module seating | Re-seat module |
| FAULT LED red | Cable miswiring or network conflict | Check cable and node addresses |
| No communication | Incorrect configuration or termination | Verify settings in SCADA/PLC tool |
| Intermittent connection | Electromagnetic interference or faulty cable | Replace cable or reroute away from high EMI sources |
6️⃣ Field Recommendations
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Keep a spare 10018/2/U module on-site for rapid replacement.
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Record installation date and firmware version in maintenance logs.
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Periodically inspect module and cables for wear or dust accumulation.
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Maintain correct network topology and termination resistors for reliable communication.
✅ Summary
Installing the Honeywell 10018/2/U communication module involves:
Preparation → Insert module → Connect cables → Power on → Verify operation
Following this guide ensures reliable communication and minimizes system downtime.